He said additional police would be out in force as part of a "focussed effort" to minimise the fallout from what was now being widely labelled a "gangland war".

Police have been targeting bikie associates individually in an attempt to keep as many off the streets as possible.

On Wednesday, April 11, officers executed six simultaneous search warrants at the homes of Hells Angels members and associates in Wentworthville, Emu Plains, Macquarie Fields, Ryde, Smithfield and the Sydney CBD.

Firearms, fireworks, prohibited drugs, steroids and chemicals used in drug manufacture were seized during the warrants and several people were investigated.

On Thursday, a 26-year-old Emu Plains man was arrested and charged with possession of a handgun.

The charge relates to the seizure during the raids of a .32 calibre pistol which police believe was used during a brawl involving 50 Hells Angels members in Kings Cross earlier this year.

The man was granted bail in the Parramatta Local Court on Thursday afternoon and will appear again on May 31.